Re: Idle speed

["content22207 <brobertson@xxxx>" <brobertson@xxxx>]

Because our little cars don't have a choke plate to limit air intake
when cold, they do the next best thing by enriching fuel mixture.
That's the purpose of warm up regulator, aka the control pressure
regulator (sorry David, couldn't resist). Is located on driver's valve
cover. Is a surprisingly complicated piece of hardware (don't worry --
complications inside) that exerts counter pressure on the piston
inside fuel distributor. When cold, less counter pressure = more fuel
from sensor plate movement. Counter pressure increases as engine warms
up, limiting movement of piston. Take a look at pages D:01:08-12 of
the tech manual.

Is your warm up problem a recent development or time honored? If long
term, you might also want to check pressure output from warm up
regulator. Is the line into top of fuel distributor.

Bill Robertson
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, "Jerry" <jlharry@xxxx> wrote:
> Hello List
> Have a problem, need advise.
> My car starts on first try , runs for a few seconds and goes to low
idle before it is warm enough to run, it tries to idle at 750 rpm but
dies. I can restart it afew times, when it is warm enough it will
keep running.
> What tells it to stay at high idle until it is warm enough to run?
> 
> Thanks for any help.
> Jerry
> Vin# 4890 
> 
> [Non-text portions of this message have been removed]